What was the big implications and problems with reality that lead to the theory of the many worlds? And what is happening to the theory of the many world theory today?
Also what world the many worlds look like?
Yes trying to understand it with out having all my high school yet.
Trying to at least get the gist of it that is hot topic everyone is talking about.
Rita
In quantum mechanics what was the theory or evidence supporting many world theory?
Tom
That an electron can appear TWO places at once in the two slit experiment---SUGGEST the THEORY of the many Worlds THEORY---Like other Advanced theories, they are just SUGGESTIONS of what COULD EXPLAIN the real observations.---Going into different universes explains it---as do other theories. We just do not know what theories are correct that explain what is observed in the standard model. -----I prefer the "Holographic Universe Theory" of physics myself---Where all REAL particles exist on an "Upper Reality" and space and position is an illusion in our "lower reality" based on how we perceive wave attributes of particles and arrange them in a 3D space.---- and it is quickly gaining favor.. HUT explains many aspects of quantum behavior and is based on David Bohm's explanation of quantum entanglement.----Where there is no space between entangled particles in the upper reality but could be light years apart in our 3D lower reality--and thus respond to each other FTL.
Jeffrey K
Everett developed the Many World's Interpretation because of the measurement problem in quantum mechanics. Nobody knows why the wavefunction collapses when a measurement is made. And how does nature define a measurement? Can an atom make a measurement? Or a photograph film? Or is a conscious observer required? Is a cat ok or must it be a human? Can it be a baby? Does the human need a PhD? There are no answers.
Hugh Everett thought that the wavefunction never collapses. When you make a measurement or observation, you become part of the wavefunction. You go into a superposition of states. But these states can not communicate with each other. So you are not aware of them. Each version of you is real, but each thinks he is the only you.
This is an Interpretation, not a new theory. It makes exactly the same predictions for the outcome of experiments. There is no way to prove or disprove this idea. It is a matter of your opinion.
neb
The reason that many-worlds interpretation is popular is that it avoids a huge gap in our understanding of quantum mechanics - the notion of a state collapse (e.g. wave function collapse).
An unmolested quantum system can exist in a superposition of possibilities, each with its own probability of occurring. When the quantum system interacts with an external system (e.g. a measurement), one of those possibilities becomes ‘real’ - the superposed state collapses to a particular possibility. We have no mathematical description of that process. Even worse, it appears to be a non local process happening instantly over extended regions.
In the many worlds interpretation, there is no state collapse. All possibilities actually occur. It’s like a series of branching paths are created. Each of those in turn, leads to other branches so you can think of an evolving path structure continuing to branch over time. Somebody on one path can only see things in the past on paths that they have traversed, they cannot see things in the past of other branches nor interact with anything on other paths. Each sees a single path of consistent reality with the other branches hidden from them.
Jim
What level of maths do you understand?
The minimum math background to start to understand quantum mechanics is linear algebra for discrete energy levels and calculus (differentiation and integration) for continuous energy levels. Complex numbers, partial and ordinary differential equations, integral calculus I-III, linear algebra, Fourier analysis. And then Field equations and a good grasp of statistics are usually required.
Plus an understanding of the "Standard Model" with all elementary particles, including quarks, spin, etc.
Once you're up to speed, we can talk n-dimensions, string theory, etc., to minimally discuss the many-worlds hypothesis.